“静态工作点的稳定”在教学中的课堂演示  

The Classroom Demonstration of Quiescent Point Stability

作　　者：张国礼[1] 张安堂[1] 

机构地区：[1]空军工程大学,陕西西安710051

出　　处：《中国现代教育装备》2016年第9期81-83,共3页China Modern Educational Equipment

摘　　要：在电子技术基础课程中,"静态工作点的稳定"是教学的重点和难点,课堂上仅靠理论讲解和软件仿真还未达到非常理想的教学效果。针对此情况,分别从静态和动态两个角度,实物演示静态工作点受环境温度影响的情况。利用改装的指针式万用表指针的摆动角度,演示共射基本放大和分压式偏置放大两种电路静态工作点的变化情况;利用基于VC的示波器信息采集软件,演示由上述两种电路放大后波形的变动情况。实践表明,该方法形象、直观,较大提高了学生学习兴趣,有效提升了课堂教学效果。In the course of Electronic Technology Fundamental, the quiescent point stability is hard to understand for students. Relying on explanation and simulation has not achieved very good teaching effect. In response, this paper adopts the method of classroom demonstration from the static and dynamic. In the common emitter amplifi er circuit and the partial pressure type amplifi er circuit, using the swing angle of a modifi ed pointer multimeter demos the chance of quiescent point. With these two circuits, using the software of oscilloscope information acquisition demos the chance of amplifi ed waveform. The practices indicate that the method is vivid and intuitive, and it can greatly improve students＇ learning interest and the effect of classroom teaching.

关 键 词：静态工作点 课堂演示 USB串口通信 教学效果 

分 类 号：TN0-4[电子电信—物理电子学] G642.4[文化科学—高等教育学]